Note the CC0 - meaning you can do anything you want with it, don’t even have to attribute.

Key: Bm
4/4

If you want to re-assemble the full draft mix from the individual parts, here are the starting bars for the individual tracks (please note that mp3 files always have a few milliseconds of silence at the beginning as an artifact of the mp3 encoding process, so if you want to be precise, you’ll have to nudge each of the tracks ever so slightly to the left).